Qt check Internet connection*

[zolakt]

Hi,

I'm working on a project for Maemo and Symbian on C++/Qt

Can someone tell me how can I just check if there is a active Internet connection in Qt? If active start the app, if not display the choose connection dilaog.

I see I have to do this with Bearer Managment which is implemented in Qt 4.7, but I'm a little lost in the documentation

[Felix]

you could also do it with QNetworkAccessManager. Just make a Http request on a very active site (e.g. www.google.com) when the reply is finished, it has an error code. When this ErrorCode == QNetworkReply::NoError you can assume an internet connection.

I know this is not the best solution, but a simple one

[zolakt]

yes i know
but I still need to bring up the connection dialog if there is no connection active

[Felix]

unfortunately i cant tell you how you can call the dialog. I never coded something for a mobile project

[harryF]

Check the qt mobility examples, e.g. the flickrdemo

[zolakt]

thank for advice
but that example won't do
bearer magement has been moved from mobility to qt since 4.7
not all the things are the same
i found some documentation on "http://doc.qt.nokia.com/4.7-snapshot/bearer-management.html":http://doc.qt.nokia.com/4.7-snapshot/bearer-management.html

but as i said, i'm a little lost in the documentation
i don't get how to accomplish just to make a check, and call the dialog if needed

[jeremy.katz]

Does "QNetworkConfigurationManager::isOnline()":http://doc.qt.nokia.com/4.7-snapshot/qnetworkconfigurationmanager.html#isOnline sound like what you need?

The "bearer monitor example":http://doc.qt.nokia.com/4.7-snapshot/network-bearermonitor.html might also be of interest.

[remy_david]

On Symbian QNetworkConfigurationManager::isOnline() returns false even when WiFi is On and connected to internet.
I don't have any simple method to check network connectivity with Qt on Symbian.

[andre]

File a bug report then, please.

[tomma]

Use "QNetworkSession":http://qt-project.org/doc/qt-4.8/qnetworksession.html

@
QNetworkSession *session = new QNetworkSession(QNetworkConfigurationManager::defaultConfiguration());
session->open();
@

Opening session should handle displaying connection dialog if needed.